Valve lifter



Dec. 18, 1928. 1,695,490

I w. F. HOBBS ETAL I I VALVE LIFTER Filed Feb. 17, 1928 25 lapsed position.

'35 Fig.7. p 1 1 The-device comprises a pair-of levers 10,

Patented Dec. 18, 1928 v UNITED sraras rare n-r o ncE'.

wrims r. ironies Annaon v -A..-ANnnnson, or nnmenronr, coivnncr cv'r, AS j SIGNORS TO THE nnrnenronr HARDWARE Manurncrnnine CORPORATION, on

BnInerEPoR'r, coNnEorIcUn A GORPORATIONZJOF CONNECTICUT.

VALVE LirrER.

' a Application filed February 17, 1928. Serial Jim-254,945

' v This invention relatesto valve lifting tools.

or tools for compressing valve springs in automobile engmesto facilltate removal of the valve,-.and has for anobject to provide an improved construction-of tool which maybe easily manipulated by one hand, and one in which the'le'vers are so arranged asto secure v sufiieient.leveragefor easy imanipulation.

It is also an object of the invention to 10, make a construction which is simple and will he of rugged character so that it is not easily gotten out of order.- It i'salso desirable to have a structure which will not occupy a large amount of spacein, a tool kit.

iWith the foregoing-and other objectsin view, we have devised the construction illustrated inthe accompanyinggdrawing forming a part of this specification, In this drawing, Fig; 1 is'a top plan view of our improved valve lifting toolt; I r i Y Fig.2 is a; side elevation thereof showing the jaws in extended or separated position. v i Fig. .3 is a side elevation of the forward end of the device showing the jaws in col- Fig. 4 is a front :elevation looking from the leftofFig. 2. .Fig. 5 is, a detail of the mounting for the locking lever. i

, Fig. 6 is a planviewxof one of the jaws rer Fig. 7 is a topiplan View, showing a slightly difi'erent arrangement ofjjaws, and a Fig. 8 is aside elevation of the-jaws of and 11 pivoted together at 12. will be noted these levers do not-cross and have I handles orgrips 13 on oneside of the pivot 12 and theextensions 14E and15 of thelevers 10 and 11 respectively onfthe other side of the pivot. As the levers do not cross: these extensions are arranged so that as the handles are pressed together the free ends of these extensions separate or move away from each other.

T 'Pivoted to the freeends ofthese extensions 14 and 15 are forked jaws 16 and 17 respectively, the pivot-s betweenthe jaws and the extensions being shown at 18. It is loreferred to form a boss 19 on the ends of these extensions 145 and 15to give a longer bearing,'and; thebjo'dyportion 20 of the jaw is notched, as shown at 21, to receive this boss jawslin anyjgiven position. For thispurso that thepivot pin 18 is supported,in, 5 the jaw on both sides of the bearings) Of, the extensions to give arigid and strong construction which will maintain thejawswin proper relative position. fE Xt-ending rearwar dlyfrom the body portion on one side of .moved apart; and they will s wing about the pivot 24:.

deans is provided to holdorlock 5 pose there is mounted on the pivot 12 a lever 25' having an upwardly extending armj-26" provided with a series of teeth or" notches i 27in one edge cooperating withfthelip 28 extending laterallyfrom: the 'arm'22 ofthe upper jaw. This lip may be integral with the arm: or it may be a separate plate 29 mounted in a recess in this arm and secured thereto byiany suitable means, such as .a screw 30. A coil spring 31; is-seatedin a. recess 32 in the lever 25 and'has one end- 33.

extending into a;notch in thislever'and the Y other end 34in a notch in one of the 1evers, as thelever 10. This spring tend lO jswing the locking lever 25,. to-the leftor counter,

clockwise, as viewed in Figs. 2 and;. 5,an,d

therefore, tends to hold the upwardlyextending arm 26 against the lip 28.1 As the lip 26 isbent downwardly somewhat it willslide freely over the. teeth as the aws; are opened,

but it will automatically engagea tooth-to.

preventmovement in the oppositepdirection and will thus hold the jaws in separated'position and will hold the valve spring'compressed. vThelockingilever 25, however, has a rearwardly- "extending arm .35 provided with a fingerpiece 36 in a position wherefit its-easily engaged a 'finger or thumb of the operator to swing the locking lever to the right .or cloekwise andremove the upright M11126 from the-lip, permitting the aws to collapse or move together.

In certain types ofengines it" is more con 60 thenotch of each jawis an arm: 22and 23, andwhenin position the aws are reversed ill venient to slip the upper jaw between the turns of the coil spring than it is to insert it between the end of the spring and the abutment. We, therefore, so shape the upperjaw as to be easily inserted between these turns and to substantially conform to the shape thereof. As shown in Figs. 2, 3 and 4, the portion of the jaw on one side of the notch has its free end 37 bent slightly downwardly and the free end 38 on the other side bent slightly upwardly. This provides curved surfaces 39 and 40 curving in opposite directions on opposite sides of the notch which readily engage the curved turns of the spring on opposite sides of the valve stem.

It is also preferred for use with some engines that the jaws are not permitted to' entirely collapse or come together. An adjustable stop pin 41 is thus provided which is tapped into the plate 29 and extends downwardly to engage the top edge of one of the levers, as for instance the extension 14, as shown in Fig. 3 to limit the closing movement of the jaws. This pin is provided with a slot 42 for a screw driver by means of which 7 the pin may be adjusted to vary the distance between the jaws when closed.

In Figs. 7 and 8, we have shown a slightly difi'erent'arrangement of the jaws. In these figures the jaws are forked the same as in the other form, but the lower jaw 43 is recessed somewhat on its top wall to receive the upper jaw 44, and the lower jaw extends forwardly at its free end beyond the free end of the upper jaw as indicated at 45. This extension is thickened somewhat so as to provide a shoulder 46 behind which the free end of the upper jaw is located when the jaws are collapsed as shown in Fig.8. This facilitates insertion of the jaws in position between the abutment and the end of the spring or the spring washer because it involves in effect the insertion of a single element, which is the extension 45.

The above construction as will be apparent gives a compact arrangement of the various levers and gives sufiicicntleverage for comparatively easy manipulation of the device even against relatively heavy springs. The jaws swing about thelpivot 24 between their rearwardly extending arms and this pivot in cooperation With the pivots 18 maintains the jaws in proper position.

Having thus set forth the nature of ourv invention, what we claim is: j

1. In a valve lifting tool, a pair of levers pivoted together including handles on one side of the pivot and extensions on the opposite side of the pivot arranged to move away from each other as the handles are moved together, jaws pivoted to said extensions and each having an ,arm extending beyond the pivot between the levers, and a pivot connecting said arms.

2. In a valve lifting tool, a pair of levers pivoted together intermediate their ends including handles on one side of the pivot and extensions on the other side thereof, jaws pivoted to said extensions and each having an arm extending beyond the pivotbetween the levers, and a pivotal connection between said arms to connectsaid arms together.

3. In a valve lifting tool, a pair of lovers pivoted together including handles on one side of the pivot and extensions on the opposite side of the pivot arranged to separate as the handles are moved together, a forked jaw pivoted to each extension and each jaw having an arm extending to the opposite side of the pivot between the levers, and a pivotal connection between said arms to connect them together and'located between the handles.

4. In a valve lifting tool, a pair of levers pivoted together and including handles, a pair of forked jaws arranged to be operated by said levers, one ofsaid jaws having the portions on opposite sides of the notch extending in opposite directions from the plane of the jaw so that'they may project between the/turns of a coiled springon the opposite sides thereof.

i 5. In a valve lifting tool, a pair of levers pivoted together including handles onone side of the pivot and extensions on the opposite side of the pivot arranged to sepa-' rate as the handles are moved together, forked jaws secured to said extensions and each having an arm extending beyond. the pivot between the levers, a pivotal connection between the arms, a locking lever mounted on the pivot between the first mentioned levers and provided with amseries of teeth, a lateral projection on oneof the jaw members to engage said teeth, and a spring tending to hold the locking lever in engagement with said projection.

6. In a valve lifting tool, a pair of levers pivoted together including handles on one.

side of the pivot and extensions on the opposite side of the pivot arranged to separate as the handles are moved together, a jaw secured to each of said extensions, a locking lever mounted on the pivot between the first mentioned levers and provided with a series of teeth, a laterally extending lip on one of the jaw members arranged to engage said teeth to hold the jaws in spaced relation, a spring tending to hold the looking lever against the lip, and said locking lever having a finger piece for moving it in the opposite direction. 7

In testimony whereof we afiix our signatures. I

WILLIS F. HOBBS. JOHN A. ANDERSON. 

